Definition of Brunel, Sir Marc Isambard in English:
Brunel, Sir Marc Isambard
proper nounbrʊˈnɛl
(1769–1849), French-born English engineer, father of Isambard Kingdom Brunel. He introduced mass-production machinery to Portsmouth dockyard and designed other machines for woodworking, boot-making, knitting, and printing. He also worked to construct the first tunnel under the Thames (1825–43).